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Sorry, no winner this week. Here is my weekly weather quiz question for the last time. Define “veering winds.” Here is the correct answer. Veering Winds are winds which shift in a clockwise direction with time at a given location (e.g., from southerly to westerly), or which change direction in a clockwise sense with height (e.g., southeasterly at the surface turning to southwesterly aloft). The latter example is a form of directional shear which is important for tornado formation. Compare with backing winds. I’ll have a new weather quiz question for you starting Monday.Please remember to post your answer as a comment by clicking on “no comments /comments” in the upper right hand portion of this page under the caption, then add your comment. The first person to post the correct answer will win a week of free personalized weather forecasts tailored to your needs. The answer has to be a comment to win. An email answer will not count. Good luck.

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Record low 18 degrees Wednesday in Eugene and we broke the record again Thursday morning (14 degrees). As for snow I measured 8.25 inches of snow in my driveway for Friday’s total.

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Advisories:

• A FREEZE WARNING IS IN EFFECT UNTIL 10 AM SUNDAY FOR THE SOUTH CENTRAL OREGON COAST AND THE CURRY COUNTY COAST.
• A WIND CHILL WARNING IS IN EFFECT FROM 5 PM TODAY UNTIL 11 PM TONIGHT FOR NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN, CENTRAL, AND EASTERN LAKE COUNTY.

• A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 10 AM TODAY FOR THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN, CENTRAL, AND EASTERN LAKE COUNTY.

A Blue-Green Algae warning  has been cancelled for Tenmile Lakes in Coos County, but continues for Fern Ridge Reservoir, Lost Creek Lake, and Willow Creek Reservoir (NE Oregon). Water monitoring has confirmed the presence of blue-green algae that can produce toxins, state public health officials said. The algae levels are likely associated with dangerous cyanotoxin concentrations in the water that can be harmful to humans and animals. Swallowing or inhaling water droplets, as well as skin contact with water, should be avoided according to the authorities.

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An upper level high pressure ridge (Shaded “Arch” shape) is drawing much colder air down to the Pacific Northwest. A surface low and frontal system have moved southward along the Oregon coast (now in Nevada) producing our snowstorm while a trough of  (Shaded “U” shape) slides to the south and is the generating force for this snow event. The snow storm is over but it will stay on the ground for a while due to the very cold temperatures. Please drive slower and don’t make any sudden moves as your vehicle could start to skid.

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Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:

• A mix of clouds and sun this AM, mostly sunny and cold this afternoon, clear this evening, partly cloudy with areas of freezing fog late tonight,
• Areas of AM freezing fog, a mix of clouds and sun Sunday  afternoon, partly cloudy with patchy freezing fog late at night,
• AM freezing fog, a mix of clouds and sun Monday, partly cloudy with a slight (20%) chance of snow at night.
• highs 23-30 lows 3-19.
• Cloudy with a (40%) chance of rain, and snow Tuesday, mostly cloudy with a slight (20%) chance of rain Tuesday night,
• Mostly cloudy with a slight (20%) chance of rain Wednesday, rain likely (70%) Wednesday night and Thursday, showers likely (70%) at night,
• Then mostly cloudy with showers likely (60%) Friday.
• highs 36-45 lows 33-38. (seasonal averages high 46 low 34).

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Forecast for the South Oregon Coast including Coos Bay and North Bend:

• Sunny today, mostly clear tonight,
• Sunny Sunday AM, partly cloudy in the afternoon and Sunday night,
• Sunny Monday, then partly cloudy at night.
• highs 34-46 lows 19-30.
• Mostly cloudy with a slight (20%) chance of showers Tuesday, cloudy with a slight (20%) chance of rain Tuesday night,
• Mostly cloudy with a slight (20%) chance of showers Wednesday, cloudy with a (40%) chance of showers at night,
• Rain likely (60%) Thursday, showers likely (60%) Thursday night,
• Then mostly cloudy with rain likely (60%) Friday.
• highs 48-52 lows 38-43. (seasonal averages high 51 low 40)

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Forecast for the Cascades of Lane County:

• Mostly cloudy with a slight (20%) chance of snow showers this AM, partly cloudy this afternoon, mostly clear tonight,
• Mostly sunny Sunday AM, partly cloudy and a bit warmer in the afternoon, partly cloudy Sunday night,
• Partly cloudy and a bit warmer Monday, partly cloudy with a slight (20%) chance of snow Monday night.
• snow level at the surface this AM, free air freezing level at the surface this afternoon through Monday, then snow level at the surface at night.
• highs 14-30 lows 0-20.
• Mostly cloudy with a slight (20%) chance of snow Tuesday, mostly cloudy with a slight (20%) chance of rain and snow Tuesday night,
• Cloudy with a (40%) chance of rain and snow Wednesday, rain and snow likely (70%) Wednesday night and Thursday, rain and snow showers likely (60%) at night,
• Then cloudy with a good (50%) chance of rain and snow showers Friday.
• snow level at the surface Tuesday, 2,500 ft. rising to 4,000 ft. late Tuesday night, 3,000 ft. Wednesday, 4,000 ft. Wednesday night, 4,500 ft. Thursday, 4,000 ft. at night, then 3,500 ft. Friday.
• highs 33-36 lows 29-32 cooling to 26 Thursday night.